I have a problem with overlapping detection.
My goal is automatically create appropriate snow sprites on existing ground tiles.
On top of every "groundtile" instance I create an invisible "collisionchecker" instance
When I try to check if my groundtile overlaps collisionchecker both on +x and -x offsets, the condition is never true, even if my groundtile is between two instances of collisionchecker
My english is not that good so I can't really describe the problem but here is the link to the capx. It should be pretty clear. I added some comments.